Southpaw: Jake Gyllenhaal and Eminem surprise fans at Detroit screening

Before being interviewed to the tune of “Bad Blood” on Monday morning, Jake Gyllenhaal made a surprise appearance with Eminem at a Detroit area screening of their new film Southpaw.

The pair came out just before the Sunday evening showing at a theater in Livonia, Michigan, in front of a cheering, photo-snapping crowd, according to the Detroit Free Press.

“Jake did an incredible job,” the rapper told the crowd. “Jake smashed it, Antoine [Fuqua] killed it, 50 [Cent] killed it. Everybody in the movie is great, in my opinion. I’m super-excited to be a part of it.”

Southpaw, which has a soundtrack produced by and featuring Eminem, opens in theaters Friday.

•GMA interviewed Jake Gyllenhaal while Taylor Swift’s ‘Bad Blood’ played in the background

•Eminem releases fiery Southpaw soundtrack tune

•Eminem to executive produce Southpaw soundtrack: Hear a sneak peek of his new song